reintroduce all eks versions

Author: dray92

.github/workflows/dsh-testing.yaml

@@ -26,7 +26,7 @@ jobs:
 
     strategy:
       matrix:
-        eks_version: ["1.25"] #, "1.30", "1.31"]
+        eks_version: ["1.25", "1.30", "1.31"]
       fail-fast: false
 
     name: '(base_image: ${{ github.event.inputs.base_image }}) (eks_version: ${{ matrix.eks_version }})'